Six sigma and an application in construction sector

Six Sigma is known as one of the quality control principles and a lot of studies have been done about Six Sigma until today. These studies were related to improvement of processes, customer satisfaction, reducing cost, production time etc. In this thesis, implementation of DMAIC (Define-Measure-Analyze-Improve-Control), known as Six Sigma methodology is studied in a construction sector company.Firstly, the problem is defined according to DMAIC methodology. Then, the necessary measurements are done and analyzed by using statistical techniques. After that, necessary improvements are determined by factorial experiment method and results of executed improvement are controlled.